perf annotate: Make capstone_init non-static so that it can be used during symbol disassemble

symbol__disassemble_capstone in util/disasm.c calls function
open_capstone_handle to open/init the capstone.

We already have a capstone_init function in "util/print_insn.c". But
capstone_init is defined as a static function in util/print_insn.c.

Change this and also add the function in print_insn.h

The open_capstone_handle checks the disassembler_style option from
annotation_options to decide whether to set CS_OPT_SYNTAX_ATT.

Add that logic in capstone_init also and by default set it to true.
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Kajol Jain <kjain@linux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Akanksha J N <akanksha@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Disha Goel <disgoel@linux.vnet.ibm.com>
Cc: Hari Bathini <hbathini@linux.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Link: https://lore.kernel.org/lkml/20240718084358.72242-13-atrajeev@linux.vnet.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/print_insn.c

@@ -32,7 +32,7 @@ size_t sample__fprintf_insn_raw(struct perf_sample *sample, FILE *fp)
 #ifdef HAVE_LIBCAPSTONE_SUPPORT
 #include <capstone/capstone.h>
 
-static int capstone_init(struct machine *machine, csh *cs_handle, bool is64)
+int capstone_init(struct machine *machine, csh *cs_handle, bool is64, bool disassembler_style)
 {
 	cs_arch arch;
 	cs_mode mode;
@@ -62,7 +62,13 @@ static int capstone_init(struct machine *machine, csh *cs_handle, bool is64)
 	}
 
 	if (machine__normalized_is(machine, "x86")) {
-		cs_option(*cs_handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_ATT);
+		/*
+		 * In case of using capstone_init while symbol__disassemble
+		 * setting CS_OPT_SYNTAX_ATT depends if disassembler_style opts
+		 * is set via annotation args
+		 */
+		if (disassembler_style)
+			cs_option(*cs_handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_ATT);
 		/*
 		 * Resolving address operands to symbols is implemented
 		 * on x86 by investigating instruction details.
@@ -122,7 +128,7 @@ ssize_t fprintf_insn_asm(struct machine *machine, struct thread *thread, u8 cpum
 	int ret;
 
 	/* TODO: Try to initiate capstone only once but need a proper place. */
-	ret = capstone_init(machine, &cs_handle, is64bit);
+	ret = capstone_init(machine, &cs_handle, is64bit, true);
 	if (ret < 0)
 		return ret;
 

tools/perf/util/print_insn.h

@@ -19,4 +19,9 @@ ssize_t fprintf_insn_asm(struct machine *machine, struct thread *thread, u8 cpum
 			 bool is64bit, const uint8_t *code, size_t code_size,
 			 uint64_t ip, int *lenp, int print_opts, FILE *fp);
 
+#ifdef HAVE_LIBCAPSTONE_SUPPORT
+#include <capstone/capstone.h>
+int capstone_init(struct machine *machine, csh *cs_handle, bool is64, bool disassembler_style);
+#endif
+
 #endif /* PERF_PRINT_INSN_H */